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Patek Philippe Reference 439 Astrua Torino

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

End of the 1920s

Maker / issuer

Patek Philippe

This Patek Philippe reference 439 is a hand-wound wristwatch featuring a square, tank-style 18k rose gold case measuring 25 x 33 mm. The case, attributed by the source to the manufacturer Wenger, is designed with short lugs and a flat snap-back.

It is equipped with a black dial that bears a double signature from the Italian retailer Astrua Torino. The watch utilizes the Patek Philippe caliber 9 manual movement. The dial is appointed with sword-style hands and applied hour markers. The watch is currently fitted with a replacement leather strap from Bulang & Sons. According to the auction description, the watch has been serviced by the vendor's watchmaker. The serial numbers provided indicate production dating toward the conclusion of the 1920s.

Evidence at a glance

Linked sources
1
Photograph views
1
Catalogue references
0

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Technical characteristics

Type
Tank-style wristwatch
Maker
Patek Philippe
Movement
Patek Philippe caliber 9
Reference
439
Case maker
Wenger
Case serial
617xxx
Case Material
18k rose gold
Place recorded
Switzerland
Case dimensions
25 x 33 mm
Movement serial
195xx
Maker / attribution
Patek Philippe

Design

Case and Dial
The timepiece features a square case measuring 25 by 33 mm, identified as a tank-style reference 439. The construction utilizes 18k rose gold and is finished with a flat snap-back case component. The source notes that the case was manufactured by Wenger. The black-colored dial is distinguished by a double signature reading 'Astrua Torino,' signifying its retail history through the Italian firm. The dial is fitted with sword-shaped hands and features applied hour markers, with the word 'SWISS' printed at the bottom edge.
Visible features
• Black dial with applied hour markers • Sword-shaped hour and minute hands • Double signature 'Astrua Torino' printed on the dial • Small knurled crown on the right side of the case
Movement and Technical Details
Power is provided by a Patek Philippe hand-wound movement, identified as caliber 9. The mechanical operation of the watch is supported by the vendor, who reports that the movement has been serviced. The watch is assigned a movement serial of 195xx and a case serial of 617xxx. These identification numbers are used by the source to attribute the production to the end of the 1920s.
Retailer and Historical Context
Astrua was an established watch retailer based in Turin. Founded by Vincenzo Astrua, the business originally operated as an artisan workshop located on Via Barbaroux, focusing on pocket watches, table clocks, and salon pendulums. The presence of the retailer's signature on the dial is presented as a marker of the collaboration between the watchmaker and the retailer. Such dual signatures were commonly restricted to long-standing business partners.

Identification

Reference
439
Serial number
Case serial 617xxx / Movement serial 195xx
Source note
Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.

Research required

  • Research required: The attribution of the case manufacturer to Wenger is not verified by external documentation.
  • Research required: The exact production date is stated as an approximation ('end of the 1920s').
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